PQ640F, PQ640Y, eccentric PQ640H pneumatic ball valve and ball valve difference is bigger, we can distinguish from the function to go up and ball valve and PQ640F, PQ640Y, eccentric PQ640H pneumatic ball valve of different effects, from ball valve and PQ640F, PQ640Y, PQ640H pneumatic eccentric half ball Industrial Valves structure. 【 Functional difference between 】 PQ640F/Y/H pneumatic half of an eccentric valve using eccentric body, eccentric sphere and valve seat, the valve lever make the rotary motion in common path self-centering, shut off more and more tightly in the process of fully achieve good sealing. The valve ball and seat completely out, eliminates the sealing ring wear, wear overcomes the traditional ball seat and the spheroid packing surface of the problem, non-metallic elastic material embedded in the metal seat, seat metal surface are well protected. This product is especially suitable for steel, aluminium, fiber, tiny solid particles, pulp, coal ash, such as liquefied petroleum gas (LPG) medium. Ball valve and PQ640F, PQ640Y, PQ640H pneumatic half of an eccentric valve difference is bigger, ball valve, 球阀) Opening and closing is a sphere, driven by the valve stem, and for ball valve axis rotate 90 & deg; Open or closed. Can also be used on regulation and control of fluid, mainly used for cutting in line, distribution, and change the flow direction of medium, good sealing, convenient operation, opening and closing fast, simple structure, small volume, small resistance, light weight, etc. 【 Physical difference between 】 PQ640F, PQ640Y, PQ640H pneumatic half of an eccentric valve ball valve' Summary 】 PQ640F, PQ640Y, eccentric PQ640H pneumatic ball valve and ball Industrial Valves and the difference function, are quite different in application, in the selection of a certain need to pay special attention to diameter, pressure, material and use of media, no matter when the design, or in the purchase, must be in strict accordance with the relevant technical requirements.
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